add tinc-arm

tinc/docker-entrypoint.sh

@@ -2,11 +2,16 @@
 
 /init.sh
 
-mkdir -p /dev/net
+if ! [[ -c /dev/net/tun ]]
+then
+    mkdir -p /dev/net
+    mknod /dev/net/tun c 10 200
+fi
 
-[ -e /dev/net/tun ] || mknod /dev/net/tun c 10 200
-
-iptables -t nat -A POSTROUTING -s ${NETWORK} -o eth0 -j MASQUERADE
+if [[ $RUNMODE = server ]]
+then
+    iptables -t nat -A POSTROUTING -s ${NETWORK} -o eth0 -j MASQUERADE
+fi
 
 exec tincd --no-detach \
            --net=${NETNAME} \